Door



DOOR

Filed Fe b. 9, 1928 INVENTOR Patented Dec. 24, 1929 UNITED STATES PATENT OFFICE DOOR Application filed. February 9, 1928. Serial No. 253,026.

This invention relates to an improved yieldingly hold the weather strip in its closed door and is particularly applicable to a revolving door and this description is limited in its application to such structure.

In revolving doors and particularly in cold climates it is essential to employ weather strips and if these are put on too loosely they permit drafts through the door-ways and if they are put on tight enough to prevent drafts it is hard to revolve the door.

This invention is designed to provide a tight weather strip, the pressure of which is released, however, when the door is re volved.

The invention consists of a weather strip which can be retracted at will by means on the face of the door, this usually being in the form of a bar by means of which the door is pushed and which is connected to the weather strip to move it out of close contact with the casing of the door.

The invention is illustrated in the accompanying drawings in which Figure 1 is a top view of a door equipped with my in vention. Figure 2 is a face view of a door, the casing being omitted and Figure 3 is an enlarged section showing the edge of the door, a partof the casing and the weather strip mounting.

I show in the drawings an ordinary casing 10 within which the door revolves, the door being made up of separate doors 11 which revolve in the ordinary way on a common center. The weather strip 12 is secured so as to close the gap between the edge 13 of the door and the casing 10. The weather strip is mounted so that it can be retracted at will and in the form shown the weather strip is mounted on a plate 14 which is pivoted where desired, as at 15, and one of the pivots as at 16, is in line with a rod 17 by means of which the door is pushed or propelled.

The rod 17 is pivotally connected as at 18 with the arm 19 of the plate 14 and is pivotally secured as at 20 to the bracket 21. The rod 17 has a slightly elongated slot 22 at the pivot 18 to allow for the swinging of these pivoted parts on different centers. A yielding means such as the spring 23 is installed to bear on the under part of the arm 19 to or tight position.

It will be evident that when the bar 17 is pushed as shown by the figure at the left side of Figure 1 that the forward movement of the bar swings the arm 19 and the plate 1 1 so that they swing on the pivot 16 and the weather strip is swung away from the casing 10 or its pressure is at least reduced suffi ciently to make it an easy matter to swing the door. When the pressure on the rod 17 has stopped the spring 23 forces the weather strip to press once more on the casing 10, a weather-tight joint is provided and also a brake for preventing the excessive and rapid rotation of the door after a party has passed through the door-way.

Various changes may be made in the construction of the parts without departing from the scope of the invention.

I claim 1. A revolving door comprising revolving door sections and a casing in which the door revolves, a weather strip on a door section and engaging the casing in passing, means on the section and movable toward the section for propelling the door and a connection between the said means and the weather strip for retracting the strip when the said means is operated to propel the door.

2. A door mounted on a pivot, a casing within which the door swings, a weather strip on the door and engaging the casing, means on the door and movable toward the door for propelling the door, and a connection between the said means ancl strip for withdrawing the strip while the door is being propelled.

3. A revolving door, a resilient weather strip on the outer edge of the door, a casing in which the door revolves, means on the face of the door for propelling the door and movable toward the door when being so propelled, and a connection between the means and the strip in order to withdraw the strip when the door is moved by said means and to release the strip when the door is not propelled whereby the strip bears with a maximum pressure against the casing when the door is stopping or at rest.

4. A revolving door, a casing in which the door revolves, a Weather strip on the edge of the door for hearing against the casing, and a handle yieldingly movable in the direction of revolution for revolving the door and retra-oting the strip whereby the pressure of the strip on the casing is relieved hile a person is passing through the door.

5. A revolving door With a Weather strip at its outer edge, a handle on the door and movable toward the .door for propelling the door, means for yieldingly holding the Weather strip in position, and a connectionfrom the handle to the said means whereby the said means is overcome When the door is propelledby-the handle and the strip is thus retracted While the door is beingpropelled.

6. Arevolving door, a plate pivoted to the door at its outer edge, a Weather strip onlthe plate, a-spring bearing 011 theplate to hold it innorinal position, an arinon the plate, and a rod pivoted to the door and to the arm of the plate whereby a push on the rod propels 4 the door and retracts the Weather strip.

In testimony thatI claim the foregoing, I v have hereto set my hand this Sth day of February, 1928.

WM. H. CAMFIELD 

